DAEWOO ELECTRONICS KOR-637V, Service Manual

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17
INTERLOCK MECHANISM AND ADJUSTMENT
The door lock mechanism is a device which has been specially designed to completely eliminate microwave radiation when the door
is opened during operation, and thus to perfectly prevent the danger resulting from the leakage of microwave.
(1) Primary interlock switch
When the door is closed, the hook locks the oven door. If the door is not closed properly, the oven will not operate.
When the door is closed, the hook pushes the button of the microswitch. Then the button of the primary interlock switch
bring it under ON condition.
(2) Secondary interlock switch and interlock monitor switch
When the door is closed, the hook pushes the lock lever downward. The lock lever presses the button of the interlock
monitor switch to bring it under NO condition and presses the button of the secondary interlock switch to bring it under ON
condition.
3. Adjustment steps
a) Loosen the one mounting screw.
b) Adjust interlock switch assembly position.
c) Make sure that lock lever moves smothly after adjustment is completed.
d) Tighten completely one mounting screw.
Door open
monitor
switch(rear)
Hook
Primary
interlock
switch
Interlock
monitor
switch
Secondary
interlock
switch(front)
Lock lever
Condition : DOOR CLOSE Condition : DOOR OPEN
Mounting screw
Button
Interlock monitor switch
When the door is closed, the interlock monitor switch should be changed (NO condition) before other switches are closed.
When the door is opened, the interlock monitor switch should be changed (NC condition) after other switches are opened.
ADJUSTMENT
Microwave emission test should be performed after adjusting interlock mechanism.
If the microwave emission exceed 4mW/cm , readjust interlock mechanism.
NOTE
2